- "Today must be a Thursday. I never could get the hang of Thursdays."
- —Arthur Dent
Thursday is a very important day in the Universe and the fourth day in the human week.
Multiple notable events occurred on a Thursday.
- Thursday was the day that Earth was destroyed for the first time, by the Vogons.
- It is also the day that Arthur Dent began the most interesting journey of his life.
- Fenchurch, "a girl sitting on her own in a small cafe in Rickmansworth", discovered secrets of the Universe.
- Named for Thor, the Viking god of thunder.